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/*
* Copyright 2020 Intel Corporation, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package module
import (
pkgerrors "github.com/pkg/errors"
)
// UserPermission contains the parameters needed for a user permission
type UserPermission struct {
UserPermissionName string `json:"name"`
APIGroups []string `json:"apiGroups"`
Resources []string `json:"resources"`
Verbs []string `json:"verbs"`
}
// UserPermissionKey is the key structure that is used in the database
type UserPermissionKey struct {
Project string `json:"project"`
LogicalCloudName string `json:"logical-cloud-name"`
UserPermissionName string `json:"upname"`
}
// UserPermissionManager is an interface that exposes the connection
// functionality
type UserPermissionManager interface {
CreateUserPerm(project, logicalCloud string, c UserPermission) (UserPermission, error)
GetUserPerm(project, logicalCloud, name string) (UserPermission, error)
GetAllUserPerms(project, logicalCloud string) ([]UserPermission, error)
DeleteUserPerm(project, logicalCloud, name string) error
UpdateUserPerm(project, logicalCloud, name string, c UserPermission) (UserPermission, error)
}
// UserPermissionClient implements the UserPermissionManager
// It will also be used to maintain some localized state
type UserPermissionClient struct {
storeName string
tagMeta string
util Utility
}
// UserPermissionClient returns an instance of the UserPermissionClient
// which implements the UserPermissionManager
func NewUserPermissionClient() *UserPermissionClient {
service := DBService{}
return &UserPermissionClient{
storeName: "orchestrator",
tagMeta: "userpermission",
util: service,
}
}
// Create entry for the User Permission resource in the database
func (v *UserPermissionClient) CreateUserPerm(project, logicalCloud string, c UserPermission) (UserPermission, error) {
//Construct key consisting of name
key := UserPermissionKey{
Project: project,
LogicalCloudName: logicalCloud,
UserPermissionName: c.UserPermissionName,
}
//Check if project exists
err := v.util.CheckProject(project)
if err != nil {
return UserPermission{}, pkgerrors.New("Unable to find the project")
}
//check if logical cloud exists
err = v.util.CheckLogicalCloud(project, logicalCloud)
if err != nil {
return UserPermission{}, pkgerrors.New("Unable to find the logical cloud")
}
//Check if this User Permission already exists
_, err = v.GetUserPerm(project, logicalCloud, c.UserPermissionName)
if err == nil {
return UserPermission{}, pkgerrors.New("User Permission already exists")
}
err = v.util.DBInsert(v.storeName, key, nil, v.tagMeta, c)
if err != nil {
return UserPermission{}, pkgerrors.Wrap(err, "Creating DB Entry")
}
return c, nil
}
// Get returns User Permission for corresponding name
func (v *UserPermissionClient) GetUserPerm(project, logicalCloud, userPermName string) (UserPermission, error) {
//Construct the composite key to select the entry
key := UserPermissionKey{
Project: project,
LogicalCloudName: logicalCloud,
UserPermissionName: userPermName,
}
value, err := v.util.DBFind(v.storeName, key, v.tagMeta)
if err != nil {
return UserPermission{}, pkgerrors.Wrap(err, "Get User Permission")
}
//value is a byte array
if value != nil {
up := UserPermission{}
err = v.util.DBUnmarshal(value[0], &up)
if err != nil {
return UserPermission{}, pkgerrors.Wrap(err, "Unmarshaling value")
}
return up, nil
}
return UserPermission{}, pkgerrors.New("Error getting User Permission")
}
// GetAll lists all user permissions
func (v *UserPermissionClient) GetAllUserPerms(project, logicalCloud string) ([]UserPermission, error) {
//Construct the composite key to select the entry
key := UserPermissionKey{
Project: project,
LogicalCloudName: logicalCloud,
UserPermissionName: "",
}
var resp []UserPermission
values, err := v.util.DBFind(v.storeName, key, v.tagMeta)
if err != nil {
return []UserPermission{}, pkgerrors.Wrap(err, "Get All User Permissions")
}
for _, value := range values {
up := UserPermission{}
err = v.util.DBUnmarshal(value, &up)
if err != nil {
return []UserPermission{}, pkgerrors.Wrap(err, "Unmarshaling value")
}
resp = append(resp, up)
}
return resp, nil
}
// Delete the User Permission entry from database
func (v *UserPermissionClient) DeleteUserPerm(project, logicalCloud, userPermName string) error {
//Construct the composite key to select the entry
key := UserPermissionKey{
Project: project,
LogicalCloudName: logicalCloud,
UserPermissionName: userPermName,
}
err := v.util.DBRemove(v.storeName, key)
if err != nil {
return pkgerrors.Wrap(err, "Delete User Permission")
}
return nil
}
// Update an entry for the User Permission in the database
func (v *UserPermissionClient) UpdateUserPerm(project, logicalCloud, userPermName string, c UserPermission) (
UserPermission, error) {
key := UserPermissionKey{
Project: project,
LogicalCloudName: logicalCloud,
UserPermissionName: userPermName,
}
//Check for URL name and json permission name mismatch
if c.UserPermissionName != userPermName {
return UserPermission{}, pkgerrors.New("Update Error - Permission name mismatch")
}
//Check if this User Permission exists
_, err := v.GetUserPerm(project, logicalCloud, userPermName)
if err != nil {
return UserPermission{}, pkgerrors.New(
"Update Error - User Permission doesn't exist")
}
err = v.util.DBInsert(v.storeName, key, nil, v.tagMeta, c)
if err != nil {
return UserPermission{}, pkgerrors.Wrap(err, "Updating DB Entry")
}
return c, nil
}
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